<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<!-- 
	Copyright (C) 2007, 2008, 2009, 2010, 2011. PARP Research Group.
	<http://perception.inf.um.es>
	University of Murcia, Spain.

	This file is part of the QVision library.

	QVision is free software: you can redistribute it and/or modify
	it under the terms of the GNU Lesser General Public License as
	published by the Free Software Foundation, version 3 of the License.

	QVision is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU Lesser General Public License for more details.

	You should have received a copy of the GNU Lesser General Public
	License along with QVision. If not, see <http://www.gnu.org/licenses/>.
-->

<html><head><meta http-equiv="content-Type" content="text/html;charset=UTF-8">
<title>QVision: Qt&#39;s Image, Video and Computer Vision Library</title>
<meta name="title" content="QVision" />
<meta name="dc.title" content="QVision" />
<meta name="url" content="http://perception.inf.um.es/QVision" />
<meta name="author" content="PARP Research Group - http://perception.inf.um.es" />
<meta name="revisit-after" content="30 DAYS"/>
<meta name="robots" content="index,follow"/>
<meta name="classification" content="*">
<meta name="rating" content="Safe For Kids">
<meta name="distribution" content="GLOBAL"/>
<meta name="description" content="Qt's Image, Video and Computer Vision Library"/>
<meta name="page-topic" content="Computer Vision research and prototype programming"/>
<meta name="geo.country" content="ES" />

<!--
Keywords:
By license:		open source, gnu, lgpl, gpl, free
By theme:		computer vision, image processing, robotics, programming, source, development
By usage:		library, toolkit, framework, prototype, application
By programming specs:	object oriented, c++, block programming, reusability, gui, graphical, parallel computing, high performance, GPU, prototyping
Interoperability with:	Qt, GSL, GNU Scientific library, OpenCV, CGAL, QWT, CUDA, mplayer, IPP, Intel Image Performance Primitives, blas, lapack
Functionallity:		image features, matrix algebra, projective geometry, mser, function minimization, function optimization, canny operator, harris operator, corner detection, performance evaluation, cpu usage, graphical interface
Main data-types:	matrix, vector, tensor, quaternion, image, polyline
Video sources:		webcam, camera, stream
Devices:		embedded, desktop computer, laptop, mini-laptop
Authors:		PARP research group. University of Murcia, Spain.
-->

<meta name="keywords" content="augmented reality, sfm, structure from motion, open source, gnu, lgpl, gpl, free, computer vision, image processing, robotics, programming, source, development, library, toolkit, framework, prototype, application, object oriented, c++, block programming, reusability, gui, graphical, parallel computing, high performance, GPU, prototyping, Qt, GSL, GNU Scientific library, OpenCV, CGAL, QWT, CUDA, mplayer, IPP, Intel Image Performance Primitives, blas, lapack, image features, matrix algebra, projective geometry, mser, function minimization, function optimization, canny operator, harris operator, corner detection, performance evaluation, cpu usage, graphical interface, matrix, vector, tensor, quaternion, image, polyline, webcam, camera, stream, embedded, desktop computer, laptop, mini-laptop, University of Murcia, Spain, PARP research group, vision por computador"/>
<meta http-equiv="keywords" content="augmented reality, sfm, structure from motion, open source, gnu, lgpl, gpl, free, computer vision, image processing, robotics, programming, source, development, library, toolkit, framework, prototype, application, object oriented, c++, block programming, reusability, gui, graphical, parallel computing, high performance, GPU, prototyping, Qt, GSL, GNU Scientific library, OpenCV, CGAL, QWT, CUDA, mplayer, IPP, Intel Image Performance Primitives, blas, lapack, image features, matrix algebra, projective geometry, mser, function minimization, function optimization, canny operator, harris operator, corner detection, performance evaluation, cpu usage, graphical interface, matrix, vector, tensor, quaternion, image, polyline, webcam, camera, stream, embedded, desktop computer, laptop, mini-laptop, University of Murcia, Spain, PARP research group, vision por computador"/>
<meta http-equiv="pragma" content="no-cache"/>
<meta http-equiv="title" content="QVision"/>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
<link href="tabs.css" rel="stylesheet" type="text/css" />
<link rel="shortcut icon" href="favicon.ico" />
</head><body>

<table width="100%"><tr>
	<td><a href="http://perception.inf.um.es/"><img src="parp.png" border="0" /> <big>PARP Research Group</big></a></td>
	<td align="right"><a href="http://www.um.es/"><big>Universidad de Murcia</big> <img src="um.png" border="0" /></a></td>
</tr></table>

<hr /><br />

<table width="95%" align="center"><tr><td>

<!-- Generated by Doxygen 1.6.3 -->
<script type="text/javascript"><!--
var searchBox = new SearchBox("searchBox", "search",false,'Search');
--></script>
<div class="navigation" id="top">
  <div class="tabs">
    <ul>
      <li><a href="index.html"><span>Main&nbsp;Page</span></a></li>
      <li><a href="pages.html"><span>Related&nbsp;Pages</span></a></li>
      <li><a href="modules.html"><span>Modules</span></a></li>
      <li><a href="annotated.html"><span>Classes</span></a></li>
      <li class="current"><a href="files.html"><span>Files</span></a></li>
      <li>
        <div id="MSearchBox" class="MSearchBoxInactive">
          <form id="FSearchBox" action="search.php" method="get">
            <img id="MSearchSelect" src="search/search.png" alt=""/>
            <input type="text" id="MSearchField" name="query" value="Search" size="20" accesskey="S" 
                   onfocus="searchBox.OnSearchFieldFocus(true)" 
                   onblur="searchBox.OnSearchFieldFocus(false)"/>
          </form>
        </div>
      </li>
    </ul>
  </div>
  <div class="tabs">
    <ul>
      <li><a href="files.html"><span>File&nbsp;List</span></a></li>
      <li><a href="globals.html"><span>File&nbsp;Members</span></a></li>
    </ul>
  </div>
<h1>src/qvblockprogramming/qvguiblocks/qvdesigner/slate/grouplink.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> *      Copyright (C) 2008, 2009, 2010, 2011, 2012. PARP Research Group.</span>
<a name="l00003"></a>00003 <span class="comment"> *      &lt;http://perception.inf.um.es&gt;</span>
<a name="l00004"></a>00004 <span class="comment"> *      University of Murcia, Spain.</span>
<a name="l00005"></a>00005 <span class="comment"> *</span>
<a name="l00006"></a>00006 <span class="comment"> *      This file is part of the QVision library.</span>
<a name="l00007"></a>00007 <span class="comment"> *</span>
<a name="l00008"></a>00008 <span class="comment"> *      QVision is free software: you can redistribute it and/or modify</span>
<a name="l00009"></a>00009 <span class="comment"> *      it under the terms of the GNU Lesser General Public License as</span>
<a name="l00010"></a>00010 <span class="comment"> *      published by the Free Software Foundation, version 3 of the License.</span>
<a name="l00011"></a>00011 <span class="comment"> *</span>
<a name="l00012"></a>00012 <span class="comment"> *      QVision is distributed in the hope that it will be useful,</span>
<a name="l00013"></a>00013 <span class="comment"> *      but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00014"></a>00014 <span class="comment"> *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span>
<a name="l00015"></a>00015 <span class="comment"> *      GNU Lesser General Public License for more details.</span>
<a name="l00016"></a>00016 <span class="comment"> *</span>
<a name="l00017"></a>00017 <span class="comment"> *      You should have received a copy of the GNU Lesser General Public</span>
<a name="l00018"></a>00018 <span class="comment"> *      License along with QVision. If not, see &lt;http://www.gnu.org/licenses/&gt;.</span>
<a name="l00019"></a>00019 <span class="comment"> */</span>
<a name="l00020"></a>00020 
<a name="l00021"></a>00021 
<a name="l00022"></a>00022 <span class="preprocessor">#include &lt;QtGui&gt;</span>
<a name="l00023"></a>00023 
<a name="l00024"></a>00024 <span class="preprocessor">#include &quot;grouplink.h&quot;</span>
<a name="l00025"></a>00025 <span class="preprocessor">#include &quot;node.h&quot;</span>
<a name="l00026"></a>00026 
<a name="l00027"></a>00027 GroupLink::GroupLink(Node *fromNode, QString fromProp, Node *toNode, QString toProp, <span class="keywordtype">bool</span> _input, QGraphicsItem * parent, QGraphicsScene * scene): Link(fromNode, fromProp, toNode, toProp, parent, scene), input(_input)
<a name="l00028"></a>00028 {
<a name="l00029"></a>00029         setColor(QColor(255, 127, 0));
<a name="l00030"></a>00030         QPen dotPen = pen();
<a name="l00031"></a>00031         dotPen.setStyle(Qt::DashDotLine);
<a name="l00032"></a>00032         setPen(dotPen);
<a name="l00033"></a>00033 }
<a name="l00034"></a>00034 
<a name="l00035"></a>00035 <span class="keywordtype">void</span> GroupLink::trackNodes()
<a name="l00036"></a>00036 {
<a name="l00037"></a>00037         <span class="comment">// actualiza el zValue al máximo de los dos, o al del mayor grupo al que pertenecen</span>
<a name="l00038"></a>00038         <span class="comment">// reducimos el tamaño del Pen del link en función del número de antecesores (*0.5 por cada uno)</span>
<a name="l00039"></a>00039         <span class="comment">//(solo se mira para uno pq no se permiten enlaces entre grupos)</span>
<a name="l00040"></a>00040         <span class="keywordtype">double</span> zvalue = (myFromNode-&gt;zValue() &gt; myToNode-&gt;zValue()) ? myFromNode-&gt;zValue() + 1 : myToNode-&gt;zValue() + 1;
<a name="l00041"></a>00041 
<a name="l00042"></a>00042         <span class="comment">// obtenemos el pen</span>
<a name="l00043"></a>00043         QGraphicsItem *ancestor = myFromNode-&gt;parentItem();
<a name="l00044"></a>00044         QPen myPen = pen();
<a name="l00045"></a>00045     <span class="keywordflow">while</span> (ancestor) {
<a name="l00046"></a>00046                 setZValue(ancestor-&gt;zValue() + 1);
<a name="l00047"></a>00047                 myPen.setWidthF(myPen.width() * 0.4);
<a name="l00048"></a>00048                 ancestor = ancestor-&gt;parentItem();
<a name="l00049"></a>00049         }
<a name="l00050"></a>00050 
<a name="l00051"></a>00051         <span class="comment">// obtenemos las posiciones origen y destino</span>
<a name="l00052"></a>00052         QPointF orig = myFromNode-&gt;scenePointPos(myFromProp, input); <span class="comment">// dependiend de si es input o no tiene que tomar los puntos de origen o de destino</span>
<a name="l00053"></a>00053         QPointF dest = myToNode-&gt;scenePointPos(myToProp, input); <span class="comment">// dependiend de si es input o no tiene que tomar los puntos de origen o de destino</span>
<a name="l00054"></a>00054 
<a name="l00055"></a>00055         <span class="keywordflow">if</span> (orig.x() &lt;= dest.x()) {
<a name="l00056"></a>00056                 setZValue(zvalue);
<a name="l00057"></a>00057                 setPen(myPen);
<a name="l00058"></a>00058                 setLine(QLineF(orig, dest));
<a name="l00059"></a>00059                 line2.hide();
<a name="l00060"></a>00060                 line3.hide();
<a name="l00061"></a>00061                 line4.hide();
<a name="l00062"></a>00062                 line5.hide();
<a name="l00063"></a>00063         }
<a name="l00064"></a>00064         <span class="keywordflow">else</span> {
<a name="l00065"></a>00065                 <span class="comment">// obtenemos el desplazamiento lateral para esta propiedad dentro de sus nodos (para que no se solapen verticalmente)</span>
<a name="l00066"></a>00066                 <span class="keywordtype">double</span> origDesp = 10.0 * (fromNode()-&gt;numProps() - fromNode()-&gt;propPoint(fromProp(), <span class="keyword">true</span>) + 1);
<a name="l00067"></a>00067                 <span class="keywordtype">double</span> destDesp = 10.0 * (toNode()-&gt;numProps() - toNode()-&gt;propPoint(toProp(), <span class="keyword">true</span>) + 1);
<a name="l00068"></a>00068 
<a name="l00069"></a>00069                 <span class="comment">// obtenemos la coordenada Y de las partes inferior</span>
<a name="l00070"></a>00070                 <span class="keywordtype">double</span> origBottom = <span class="comment">/*fromNode()-&gt;scenePos().y() +*/</span> fromNode()-&gt;sceneBoundingRect().bottom() + origDesp;
<a name="l00071"></a>00071                 <span class="keywordtype">double</span> destBottom = <span class="comment">/*toNode()-&gt;scenePos().y() +*/</span> toNode()-&gt;sceneBoundingRect().bottom() + destDesp;
<a name="l00072"></a>00072                 <span class="keywordtype">double</span> bottom = origBottom &gt; destBottom ? origBottom : destBottom;
<a name="l00073"></a>00073 
<a name="l00074"></a>00074                 setZValue(zvalue);
<a name="l00075"></a>00075                 line2.setZValue(zvalue);
<a name="l00076"></a>00076                 line3.setZValue(zvalue);
<a name="l00077"></a>00077                 line4.setZValue(zvalue);
<a name="l00078"></a>00078                 line5.setZValue(zvalue);
<a name="l00079"></a>00079                 setPen(myPen);
<a name="l00080"></a>00080                 line2.setPen(myPen);
<a name="l00081"></a>00081                 line3.setPen(myPen);
<a name="l00082"></a>00082                 line4.setPen(myPen);
<a name="l00083"></a>00083                 line5.setPen(myPen);
<a name="l00084"></a>00084                 setLine(QLineF(orig, orig + QPointF(origDesp, 0.0)));
<a name="l00085"></a>00085                 line2.setLine(QLineF(orig + QPointF(origDesp, 0.0), QPointF(orig.x() + origDesp, bottom)));
<a name="l00086"></a>00086                 line3.setLine(QLineF(QPointF(orig.x() + origDesp, bottom), QPointF(dest.x() - destDesp, bottom)));
<a name="l00087"></a>00087                 line4.setLine(QLineF(QPointF(dest.x() - destDesp, bottom), dest + QPointF(0.0 - destDesp, 0.0)));
<a name="l00088"></a>00088                 line5.setLine(QLineF(dest + QPointF(0.0 - destDesp, 0.0), dest));
<a name="l00089"></a>00089                 <span class="keywordflow">if</span> ((myFromNode-&gt;isVisible()) &amp;&amp; (myToNode-&gt;isVisible())) {
<a name="l00090"></a>00090                         line2.show();
<a name="l00091"></a>00091                         line3.show();
<a name="l00092"></a>00092                         line4.show();
<a name="l00093"></a>00093                         line5.show();
<a name="l00094"></a>00094                 }
<a name="l00095"></a>00095         }
<a name="l00096"></a>00096 }
<a name="l00097"></a>00097 
<a name="l00098"></a>00098 
</pre></div></div>
</td></tr></table>

<br /><hr><br />
<center><a href="http://perception.inf.um.es/QVision">QVision framework</a>.
<a href="http://perception.inf.um.es">PARP research group</a>.
Copyright &copy; 2007, 2008, 2009, 2010, 2011.</center>
<br />
</body>
</html>
